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| − | '''Light''' can refer to [[electomagnetic]] [[radiation]] of any [[wavelength]], or to EM radiation of visible wavelengths; that stimulate the [[organ]]s of sight, having for normal human vision wavelengths ranging from about 3900 to 7700 [[ångstrom]]s and traveling at a speed of about 186,300 [[mile]]s per second. On the first [[day]], God created light; [[God]] said ''Let there be light,'' and there was light<ref>[[Genesis]] 1:3</ref>. | + | '''Light''' can refer to [[electomagnetic]] [[radiation]] of any [[wavelength]], or to EM radiation of visible wavelengths <ref>Wavelengths of EM spectrum <i>usbyte.com</i> [http://www.usbyte.com/common/approximate_wavelength.htm]</ref> ; that stimulate the [[organ]]s of sight, having for normal human vision wavelengths ranging from about 3900 to 7700 [[ångstrom]]s (390 to 780 [[nanometer]]s), violet has the shortest wavelength and red has the largest. |
| | + | It traveling at the [[speed of light]]: about 186,300 [[mile]]s (300,000 kilometres) per second. |
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| | + | EM radiation is a disturbance in an electric field, it consists of an energy particle called a "[[photon]]", a photon carries no electric charge and is massless, but since all energy is attracted by gravitation, light rays will bend near planets and stars. |
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| | + | Debate over whether light was a wave, or consists of particles was finally solved when [[quantum physics]] revealed all particles have wavelengths, but this is not generally noticeable in normal matter. |
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| | + | The EM spectrum consists of the following types of photon radiation (in order of increasing wavelength): cosmic rays, gamma rays, x-rays, ultraviolet light, visible light, infrared light and radio waves. |
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| | + | The speed of light is the same in every frame of reference, no matter how fast the source or the observer are moving, this gives rise to the [[theory of relativity]]. |
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| | + | As with any wave. wavelength times frequency equals the speed of a light wave. |
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| | + | In the Biblical creation God created light on the first [[day]]; [[God]] said ''Let there be light,'' and there was light<ref>[[Genesis]] 1:3</ref>. |
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| | == Young Earth Creationist View Regarding Starlight == | | == Young Earth Creationist View Regarding Starlight == |
| − | In regards to the question of how one can see [[star|starlight]] from millions of light years away, [[young earth]] [[creationist]]s [[scientist]]s commonly mention two things. First, these scientists assert that the [[Big Bang Theory]] has a star light-travel time problem and cite the work of Dr. [[Charles W. Misner]]. <ref>http://www.answersingenesis.org/creation/v25/i4/lighttravel.asp</ref> Secondly, the work of young earth creationist scientist Dr. [[John Hartnett]] is cited who proposes a young earth creationist [[cosmology]] that rejects an [[a priori]] [[methodological naturalism]] approach to the question of how one can see starlight from millions of light years away. <ref>http://www.answersingenesis.org/tj/v17/i2/cosmology.asp</ref> | + | In regards to the question of how one can see [[star|starlight]] from millions of light years away, [[young earth]] [[creationist]]s [[scientist]]s commonly mention two things. First, these scientists assert that the [[Big Bang Theory]] has a star light-travel time problem and cite the work of Dr. [[Charles W. Misner]]. <ref>http://www.answersingenesis.org/creation/v25/i4/lighttravel.asp</ref> Secondly, the work of young earth creationist scientist Dr. [[John Hartnett]] proposes an alternative, creationist view, by theorizing the Earth was trapped in a time-dilation field caused by extremely strong gravitation during the first few days of creation, from Earth's point of view, while billions of years passed for the rest of the universe. |
| | + | He attributes the field, it's removal and the continued balance in our solar system (after the field was removed) to divine intervention. <ref>http://www.answersingenesis.org/tj/v17/i2/cosmology.asp</ref> |
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| | ==References== | | ==References== |